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Updated: Aug 1, 2026

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks (MOFs)
Published on: January 17, 2020
Systematic study of the reaction kinetics for HMX
1†Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088, China.
Molecular dynamics simulations reveal the reaction pathways of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX). Key intermediate molecules were identified, aiding in accurate prediction of detonation properties.
Area of Science:
- Computational chemistry
- Materials science
- Chemical engineering
Background:
- Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) is a high-performance explosive.
- Understanding its reaction dynamics under extreme conditions is crucial for safety and performance.
Purpose of the Study:
- To simulate the reaction process of HMX across wide temperature and pressure ranges.
- To identify key intermediate molecules and reaction pathways.
- To calculate detonation properties and compare them with experimental data.
Main Methods:
- Molecular dynamics (MD) simulations were employed to model HMX reactions.
- Postprocessing programs were developed to analyze intermediate species and reactions.
- Reactive Hugoniot curves and detonation wave profiles were calculated.
Main Results:
- Detonation velocity and pressure were calculated as 9984 m/s and 38.3349 GPa, closely matching experimental values (9110 m/s and 39.5 GPa).
- The reaction zone width was determined to be 10 μm.
- Primary detonation products include N2, H2O, and CO2.
Conclusions:
- The study successfully simulated HMX detonation using molecular dynamics.
- Intermediate molecules like N2O2, N2O5, and C3H3N3 were identified as important in reaction mechanisms, though not present in final products.
- The findings provide valuable insights into HMX combustion and detonation chemistry.
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